Originally posted by dseabaugh
I have 4 similar size but they are "shackles" rather than clevices. Clevis has a pin go through that is not threaded. Shackle is threaded. When you stress a clevis it bends and the pin can come out making a flying iron projectile out of the clevis, pin, and whatever hooked to it. I saw a dozer one time that the pin came out and the cable and clevis hit the back with such force that it put a dent half way into the fuel tank on the back (about 20 inch dia circle 8 inches deep. It was a JD dozer and I don't know the thickness of the metal, But My Fiat Allis' tank is about 1/4" thick and baffled inside. Another 12 inches higher and it would have killed the operator. Shackels are much safer. mine are 1. 5" dia pins and rated at 25 ton. I also have a clevis that takes a 2 inch pin , but when in need something that big I wouldn't dare use it.